SOLUTION: The average of four numbers is 18. If one of the four numbers, 25, is taken away, what is the average of the remaining three numbers?

Question 108177: The average of four numbers is 18. If one of the four numbers, 25, is taken away, what is the average of the remaining three numbers?
Found 2 solutions by edjones, MathLover1:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
18*4=72 sum of the 4 numbers
72-25=47 sum of 3 remaining numbers.
47/3=15 2/3 average of 3 numbers.
Ed

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

Given: ,

If is taken away

Then:

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